// scss-lint:disable QualifyingElement, DuplicateProperty

// Reboot
//
// Global resets to common HTML elements and more for easier usage by Bootstrap.
// Adds additional rules on top of Normalize.css, including several overrides.


// Reset the box-sizing
//
// Change from `box-sizing: content-box` to `border-box` so that when you add
// `padding` or `border`s to an element, the overall declared `width` does not
// change. For example, `width: 100px;` will always be `100px` despite the
// `border: 10px solid red;` and `padding: 20px;`.
//
// Heads up! This reset may cause conflicts with some third-party widgets. For
// recommendations on resolving such conflicts, see
// http://getbootstrap.com/getting-started/#third-box-sizing.
//
// Credit: https://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/

html {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}


// Make viewport responsive
//
// @viewport is needed because IE 10+ doesn't honor <meta name="viewport"> in
// some cases. See http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/.
// Eventually @viewport will replace <meta name="viewport">.
//
// However, `device-width` is broken on IE 10 on Windows (Phone) 8,
// (see http://timkadlec.com/2013/01/windows-phone-8-and-device-width/ and https://github.com/twbs/bootstrap/issues/10497)
// and the fix for that involves a snippet of JavaScript to sniff the user agent
// and apply some conditional CSS.
//
// See http://getbootstrap.com/getting-started/#support-ie10-width for the relevant hack.
//
// Wrap `@viewport` with `@at-root` for when folks do a nested import (e.g.,
// `.class-name { @import "bootstrap"; }`).
@at-root {
  @-ms-viewport { width: device-width; }
}


//
// Reset HTML, body, and more
//

html {
  // Sets a specific default `font-size` for user with `rem` type scales.
  font-size: $font-size-root;
  // As a side-effect of setting the @viewport above,
  // IE11 & Edge make the scrollbar overlap the content and automatically hide itself when not in use.
  // Unfortunately, the auto-showing of the scrollbar is sometimes too sensitive,
  // thus making it hard to click on stuff near the right edge of the page.
  // So we add this style to force IE11 & Edge to use a "normal", non-overlapping, non-auto-hiding scrollbar.
  // See https://github.com/twbs/bootstrap/issues/18543
  -ms-overflow-style: scrollbar;
  // Changes the default tap highlight to be completely transparent in iOS.
  -webkit-tap-highlight-color: rgba(0,0,0,0);
}

body {
  // Make the `body` use the `font-size-root`
  font-family: $font-family-base;
  font-size: $font-size-base;
  line-height: $line-height-base;
  // Go easy on the eyes and use something other than `#000` for text
  color: $body-color;
  // By default, `<body>` has no `background-color` so we set one as a best practice.
  background-color: $body-bg;
}

// Suppress the focus outline on elements that cannot be accessed via keyboard.
// This prevents an unwanted focus outline from appearing around elements that
// might still respond to pointer events.
//
// Credit: https://github.com/suitcss/base
[tabindex="-1"]:focus {
  outline: none !important;
}


// Commented out because already included in fonts
//
// //
// // Typography
// //

// // Remove top margins from headings
// //
// // By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
// // margin for easier control within type scales as it avoids margin collapsing.
// h1, h2, h3, h4, h5, h6 {
//   margin-top: 0;
//   margin-bottom: .5rem;
// }

// // Reset margins on paragraphs
// //
// // Similarly, the top margin on `<p>`s get reset. However, we also reset the
// // bottom margin to use `rem` units instead of `em`.
// p {
//   margin-top: 0;
//   margin-bottom: 1rem;
// }

// Abbreviations and acronyms
abbr[title],
// Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
abbr[data-original-title] {
  cursor: help;
  border-bottom: 1px dotted $abbr-border-color;
}

address {
  margin-bottom: 1rem;
  font-style: normal;
  line-height: inherit;
}


.container, .container-fluid, .bootstrapstyle {
  ol,
  ul,
  dl {
    margin-top: 0;
    margin-bottom: 1rem;
  }

  ol ol,
  ul ul,
  ol ul,
  ul ol {
    margin-bottom: 0;
  }

  dt {
    font-weight: $dt-font-weight;
  }

  dd {
    margin-bottom: .5rem;
    margin-left: 0; // Undo browser default
  }

  blockquote {
    margin: 0 0 1rem;
  }


  //
  // Links
  //

  a {
    color: $link-color;
    text-decoration: $link-decoration;

    @include hover-focus {
      color: $link-hover-color;
      text-decoration: $link-hover-decoration;
    }

    &:focus {
      @include tab-focus();
    }
  }

  // And undo these styles for placeholder links/named anchors (without href)
  // which have not been made explicitly keyboard-focusable (without tabindex).
  // It would be more straightforward to just use a[href] in previous block, but that
  // causes specificity issues in many other styles that are too complex to fix.
  // See https://github.com/twbs/bootstrap/issues/19402

  a:not([href]):not([tabindex]) {
    color: inherit;
    text-decoration: none;

    @include hover-focus {
      color: inherit;
      text-decoration: none;
    }

    &:focus {
      outline: none;
    }
  }


  //
  // Code
  //

  pre {
    // Remove browser default top margin
    margin-top: 0;
    // Reset browser default of `1em` to use `rem`s
    margin-bottom: 1rem;
    // Normalize v4 removed this property, causing `<pre>` content to break out of wrapping code snippets
    overflow: auto;
  }


  //
  // Figures
  //

  figure {
    // Normalize adds `margin` to `figure`s as browsers apply it inconsistently.
    // We reset that to create a better flow in-page.
    margin: 0 0 1rem;
  }


  //
  // Images
  //

  img {
    // By default, `<img>`s are `inline-block`. This assumes that, and vertically
    // centers them. This won't apply should you reset them to `block` level.
    vertical-align: middle;
    // Note: `<img>`s are deliberately not made responsive by default.
    // For the rationale behind this, see the comments on the `.img-fluid` class.
  }


  // iOS "clickable elements" fix for role="button"
  //
  // Fixes "clickability" issue (and more generally, the firing of events such as focus as well)
  // for traditionally non-focusable elements with role="button"
  // see https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile

  [role="button"] {
    cursor: pointer;
  }


  // Avoid 300ms click delay on touch devices that support the `touch-action` CSS property.
  //
  // In particular, unlike most other browsers, IE11+Edge on Windows 10 on touch devices and IE Mobile 10-11
  // DON'T remove the click delay when `<meta name="viewport" content="width=device-width">` is present.
  // However, they DO support removing the click delay via `touch-action: manipulation`.
  // See:
  // * http://v4-alpha.getbootstrap.com/content/reboot/#click-delay-optimization-for-touch
  // * http://caniuse.com/#feat=css-touch-action
  // * http://patrickhlauke.github.io/touch/tests/results/#suppressing-300ms-delay

  a,
  area,
  button,
  [role="button"],
  input,
  label,
  select,
  summary,
  textarea {
    touch-action: manipulation;
  }


  //
  // Tables
  //

  table {
    // No longer part of Normalize since v4
    border-collapse: collapse;
    // Reset for nesting within parents with `background-color`.
    background-color: $table-bg;
  }

  caption {
    padding-top: $table-cell-padding;
    padding-bottom: $table-cell-padding;
    color: $text-muted;
    text-align: left;
    caption-side: bottom;
  }

  th {
    // Centered by default, but left-align-ed to match the `td`s below.
    text-align: left;
  }


  //
  // Forms
  //

  label {
    // Allow labels to use `margin` for spacing.
    display: inline-block;
    margin-bottom: .5rem;
  }

  // Work around a Firefox/IE bug where the transparent `button` background
  // results in a loss of the default `button` focus styles.
  //
  // Credit: https://github.com/suitcss/base/
  button:focus {
    outline: 1px dotted;
    outline: 5px auto -webkit-focus-ring-color;
  }

  input[type="radio"],
  input[type="checkbox"] {
    // Apply a disabled cursor for radios and checkboxes.
    //
    // Note: Neither radios nor checkboxes can be readonly.
    &:disabled {
      cursor: $cursor-disabled;
    }
  }


  input[type="date"],
  input[type="time"],
  input[type="datetime-local"],
  input[type="month"] {
    // Remove the default appearance of temporal inputs to avoid a Mobile Safari
    // bug where setting a custom line-height prevents text from being vertically
    // centered within the input.
    //
    // Bug report: https://github.com/twbs/bootstrap/issues/11266
    -webkit-appearance: listbox;
  }

  textarea {
    // Textareas should really only resize vertically so they don't break their (horizontal) containers.
    resize: vertical;
  }

  fieldset {
    // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
    // so we reset that to ensure it behaves more like a standard block element.
    // See https://github.com/twbs/bootstrap/issues/12359.
    min-width: 0;
    // Reset the default outline behavior of fieldsets so they don't affect page layout.
    padding: 0;
    margin: 0;
    border: 0;
  }

  legend {
    // Reset the entire legend element to match the `fieldset`
    display: block;
    width: 100%;
    padding: 0;
    margin-bottom: .5rem;
    font-size: 1.5rem;
    line-height: inherit;
  }

  input[type="search"] {
    // This overrides the extra rounded corners on search inputs in iOS so that our
    // `.form-control` class can properly style them. Note that this cannot simply
    // be added to `.form-control` as it's not specific enough. For details, see
    // https://github.com/twbs/bootstrap/issues/11586.
    -webkit-appearance: none;
  }

  // todo: needed?
  output {
    display: inline-block;
  //  font-size: $font-size-base;
  //  line-height: $line-height;
  //  color: $input-color;
  }

  // Always hide an element with the `hidden` HTML attribute (from PureCSS).
  [hidden] {
    display: none !important;
  }
}
